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COOWOO ST30 Professional Wireless Smart Home Security Alarm System DIY Kit, App Control by Smartphone, Compatible with Alexa

Amazon.com Price: $49.90 (as of 11/10/2019 19:33 PST- Details)

Works with Amazon Alexa for voice control(Home Security Alarm Hub kit required, Alexa device and Home Security Alarm Hub kit sold separately)
This button s an extension of ST30 wireless alarm

Works with Amazon Alexa for voice control(Home Security Alarm Hub kit required, Alexa device and Home Security Alarm Hub kit sold separately)
This button s an extension of ST30 wireless alarm system, let you know you have a visitor, or works as a SOS button for Children’s room/the aged room.
Wireless transmitting distance:≤490ft(in the open area).
Instant notifications,Wireless and moveable, Perfect for doors, Children’s room/the aged room, etc.
Battery-powered.